java urlencoder.encode 和 htmlencoder

//類似於asp中htmlencode函數的jsp函數   public static String HTMLEncode(String text) {     if (text == null)       return "";     StringBuffer results = null;     char[] orig = null;     int beg = 0, len = text.length();     for (int i = 0; i < len; ++i) {       char c = text.charAt(i);       switch (c) {         case 0:         case '&':         case '<':         case '>':         case '"':           if (results == null) {             orig = text.toCharArray();             results = new StringBuffer(len + 10);           }           if (i > beg)             results.append(orig, beg, i - beg);           beg = i + 1;           switch (c) {             default: //  case  0:               continue;             case '&':               results.append("&");               break;             case '<':               results.append("<");               break;             case '>':               results.append(">");               break;             case '"':               results.append("/"");               break;           }           break;       }     }     if (results == null)       return text;     results.append(orig, beg, len - beg);     return results.toString();   }   //類似於asp中urlencode函數的jsp函數   public static String URLEncode(String text) {     StringBuffer StrUrl = new StringBuffer();     for (int i = 0; i < text.length(); ++i) {       switch (text.charAt(i)) {         case ' ':           StrUrl.append("%20");           break;         case '+':           StrUrl.append("%2b");           break;         case '/'':           StrUrl.append("%27");           break;         case '/':           StrUrl.append("%2F");           break;         case '.':           StrUrl.append("%2E");           break;         case '<':           StrUrl.append("%3c");           break;         case '>':           StrUrl.append("%3e");           break;         case '#':           StrUrl.append("%23");           break;         case '%':           StrUrl.append("%25");           break;         case '&':           StrUrl.append("%26");           break;         case '{':           StrUrl.append("%7b");           break;         case '}':           StrUrl.append("%7d");           break;         case '//':           StrUrl.append("%5c");           break;         case '^':           StrUrl.append("%5e");           break;         case '~':           StrUrl.append("%73");           break;         case '[':           StrUrl.append("%5b");           break;         case ']':           StrUrl.append("%5d");           break;         default:           StrUrl.append(text.charAt(i));           break;       }     }     return StrUrl.toString();   }         用現成的函數即可： java.net.URLEncoder.encode() java.net.URLDecoder.decode()